So, I have the icx 6610, and decided to try the 40g ports (not the breakout, they are in use but not relevant to my question) so I bought an adaptor from startech that has a 40gb qsfp port. I’ve removed 1/2/6 from stack (stack was disabled anyways) added it to my home vlan. Plugged the two together with arista qsfp modules and a fancy fibre cable. Got a link up at 40gbs. But no network traffic. Couldn’t get a dhcp IP address. Check the dhcp server logs and it was being asked for an ip and it was sending it but it never gets to the device connected to 1/2/6. I manually gave the device on 1/2/6 an ip and I could then ping any device on my network. But that’s it, literally all I can do is ping. I can’t access scp, ssh, html. Literally nothing appears to get through. It’s on the same vlan as all other devices so I’m at a loss. It’s definitely not showing as being a stacking port. But I can’t for the life of me fathom where to start troubleshooting. I’ve tried brocade qsfp transceivers, a second fibre cable, a different nic all with the same results. I even tried 1/2/1 and had exactly the same results. Only time I’ve ever been able to ping but no network access has been due to vlan issues but I’ve triple checked it’s in the vlan. Have tried tagging the port instead of untagged and I can't even ping it then. I’ve seen a few others have had a similar issue from reading this thread but no actual solutions have been posted, and yes I did try rebooting everything, crazily enough rebooting the switch seems to fix a few issues! So yeah, anyone with any ideas?
After further diagnostics, using tagged lan ensures the client is on the arp table for the router. doing a "ping google.com" obtains an IP address from the dns but it can't actually ping the ip its given.
Conversely removing the tag and adding it as untagged, I am able too ping local computers, and can obtain ip addresses from dns server. The client still shows on arp table though albeit with the wrong hostname, (Same hostname as the first windows based client I tried the network card in) But the ping actually goes out to the service (i.e. google, Facebook)
Traceroute doesn't work in either case.
So from all of the above from what I can tell I may be looking at a faulty NIC as vlan works fine with the two breakout ports.